The Best Wurst

I went to this cart after hanging out with friends. First of all, they were serving «all-​beef» hot dogs with pork casings… so how is that all-​beef? When I called that out, rather than be apologetic or hospitable, the guy working the cart was rather rude and condescending.
He went on to explain, in an aggressive manner, that even if it was ‘all-​beef’, they cook them on a grill with pork dogs anyway…
So, therefore, they can have no truth in advertising because if if they did sell you what they claimed to have, their incompetence would lead to cross-​contamination of the food? That makes me feel quite relieved!
Since the guy caught on that my aversion to pork was due to a religious observation, I felt especially bullied/​attacked.
Dear jerk-​wad, take some kind of responsibility for something and be hospitable, its the least you could do. Give your money to kind people.